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' MORTISE LOCK.

No. 575,763. Patented Jan. 26, 1897.

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(No Model.)

A. WILDERN.

MORTISB LOCK.

Patented Jan. 26, 1897.

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' MORTISE LOCK.

No. 575,763. 'Patented Jan. 26,1897.

m: Noam vs ns cc, mnrovumov, wAsHmnwN n c 15 of parts of the same, as will be hereinafter first UNITED STATES PATENT OEEICE.

ADNA VILDERN, OF LONDON, CANADA, ASSIGNOR TO JOHN WILDERN, JOHN BROOKEST, GEORGE B. DEACON, AND DAVID C. WILSON, OF SAME PLACE.

IVIORTISE-LOCK.

SPECIFICATION forming part of Letters Patent No. 575,763, dated January 26, 1897.

l Application iiled May ll, 1895. Serial No. 549,024. (No model.)

To all whom it may concern:

Be it known that I, ADNA WILDERN, a subject of the Queen of Great Britain, and a resident of the city of London, in the Province of Ontario, Canada, have invented a new and useful Mortise-Lock, of which the following. is a speciiication.

This invention relates to a door-fastening adapted to be inserted into a mortise in the 1o edge of the door, whose locking-bolt is retracted by a key, the object being to provide a simple, cheap, inexpensive, and efficient device for fastening doors; and it consists of the improved construction and combination fullyset forth and described and then pointed out in the claim.

In order that these improvements may be better understood, I have illustrated in the aczo companying drawings a lock constructed according to my invention in which drawings- Figure I is a plan View of a mortise-lock and attachments embodying my invention. In this view portions of the door and frame and 2 5 the lining of the spring-bolt mortise are shown in section. Fig. 2 is an end view of the mortiselock, looking toward the tumbler of the springbolt. In this view a central section of the locking-bolt case and the parts contained therein 3o is shown. The door and a portion of the spindle and one of the knob-Shanks are also shown in section. Fig. 3 is a detail side view of the spring-bolt and its operating-tumbler. Fig. 4 is a detail central longitudinal sectional view 3 5 of the spring-bolt, tumbler, and the lining of the mortise in which the spring-bolt is operated. Fig. 5 is a detail side view of the locking-bolt, its keeper, and the casein which these parts are contained. Figs. 6, 7, and 8 are detail 4o views showing the operation by the key of the locking-bolt and lever when locking the door. Fig. 9 is a detail side and edge view of the locking-bolt. Fig. l0 is a detail side view of the lever and the spring connected therewith. Fig. 1l is a detail plan and side View of the tumbler. Fig. 12 is a detail plan and side view of the locking-bolt keeper. Figs. 13 and 14 are cross-sectional views on the line a o, and b b, respectively of Fig. I. Fig. 15 is a- 5o detail side and end view of the spindle.

A designates a door-case, a portion only of which is shown in Fig. 1, in which the door O swings; B, the spring-bolt keeper rigidly secured to said case, and O the door, in which is formed the mortise O to receive the springbolt J. In this door O is also formed the opening C2, at right angles to the mortise C and communicating therewith. Thisopening C2 receives the spindle F and'is formed larger at one side of the door to permit of the insertion and engagement of the tumbler I with the spring-bolt J when the latter is placed in the mortise C.

YF designates a spindle, one end of which, F', is formed square and the other end with a screw-thread F2, and F3 is a groove formed lengthwise in said spindle F.

G/ designates a door-knob, in the shank G2 of which a square socket is formed to receive the square end Fl of the spindle, and G designates a knob, the socket in the shank G3 of which is screw-threaded to engage with the screw-threaded end F2 of the spindle, and L L designate set-screws which extend through the Shanks G2 G3 and engage with the spindle F to rigidly secure said Shanks G2 G3, as Well as the knobs G G', secured to or formed i'ntegral therewith, to said spindle.

I designates a tumbler in which the opening Il is formed, and this tumbler I is also provided with the interior tongue I2 and the lateral arms I3.

J designates a spring-bolt which moves freely back and forth lengthwise in the mortise C, before referred to, and this mortise is provided with the lining M, of metal or other suitable material, to prevent the movement of the spring-bolt from wearing or injuring the door, and it also acts as a guide to conduct the spring-bolt io and hold it in line with the recess B in the keeper B. This spring-bolt J is provided with laterally-projecting flanges J', with Which the arms I3 of the tumbler engage, and with the recess J2 to receive and hold the spring N, and in this spring-bolt J is formed the elongated openings J 3 J 1. Through the opening J 3 the spindle F extends to operate the tumbler I, and said opening, being elongated, permits the springbolt J to move longitudinally independent of said spindle.

O designates a pin which projects through the opening J4, the ends of said pin O being rigidly secured in opposite sides of the lining M to hold the lining together` when formed in sections, and this opening Ji1 is formed elongated to permit the spring-bolt .I to move longitudinally independent of the pin O.

N designates a spring which is held in the recess J2 between a shoulder on the spring-bolt J and the pin O, or, it preferred, the latter may be in the form of a shoulder on the lining M.

D designates a plate, and E a case, which are secured to the door around the spindle F. The case E is formed with the recess E, with the shoulder E2, and with the keyhole E2.

P designates the locking-bolt, in which the recess P is formed, and which bolt is provided with the shoulders P2 P2, with the studs P", and with the flanges P5.

R designates a lever, one or more of which may be used, in which is formed, near it`s"`upper end, the opening R2, while its lower end is forked, as shown, so as to form a recess R' between the arms ot the fork, and a notch R3 is formed in the outer edge of one arm.

S designates a spring connected with the lever R.

IVhen placed in position, the lever or levers R are pivotally secured to and move longitudinall y with the locking-bolt P by the studs P4 engaging with the openings R2 of said levers, and the spring S engages with the flange P5, as shown in Fig. G, to act on the levers R in order to prevent the accidental disengagement of the notches RS from the shoulder E2, and by experiment I have found this construction to give the best results, although this Iiange P5 may be formed on or be part of the case E.

1I designates the locking-bolt keeper, in which an opening II is formed, and this keeper Il is provided with the interior tongue H2 and the recess IIB.

This lock is secured in and to the door as follows: The lining Mis placed around the spri1ig-bolt J, and the pin O is secured to said lining, as shown in Fig. 4. These parts are then inserted in the mortise C', and said lining M is prevented from moving longitudinally with the spring-bolt by screws or other securing devices extending through the flange T of said lining Minto the door C. The tumbler I is then inserted in the larger end of the opening C2 and the springbolt J pressed inward to permit the arms I3 ot the former to engage with the iianges J ot the latter. Then in this position, on removing the pressure from the spring-bolt .I the expansion of the spring N holds the tumbler I and springbolt .I in contact.

The plate D is then secured to the door and the spindle F is inserted and projected through an opening in said plate D, through the opening C2 in the door, through the opening J 3 of the spring-bolt, and through the openings I and H of the tumbler and locking-bolt keeper, respectively, and in order to hold the tumbler I and locking-bolt keeper 1I in proper position and. to prevent them from turning independently of the spindle F the tongues I2 and H2 are adjusted in the groove F2 ot the spindle F. The case E with its contained mechanism is then secured to the door, and the screw-threaded socket of the shank G2 is engaged with and turned on thc screw-threaded end F2 of the spindle F until there is no movement lengthwise of said spindie, but at the same time permit the knobs and spindle to turn freely.

The operation is as follows: IVhen in this position, by turning either knob slightly the end of the spring-bolt J is retracted and disengaged from the keeper I3, which permits the door to be opened. \Vhen shutting the door,the end of the spring-bolt J abuts against the face of the keeper I3. spring-bolt J longitudinally into the door C and compresses the spring N, so that the instant the end oi' the spring-bolt J comes opposite the recess B/ ofthe keeper I3 the expansion of the spring N projects the bolt J into said recess B and holds the door closed. XVhen in this position and wishing to lock the door, the key is inserted in the keyhole E2, and by turning it in the direction of the dotted line z (shown in Fig. G) the bit of the key engages in the fork of the lever Rinside of the recess R' and moves the latter to the position shown in Fig. 7 This compresses the spring S and disengages the notch R2 from the shoulder E2. The further turn of the key brings the bit thereof against the shoulder P2 of the locking-bolt P and moves said locking-bolt in the direction of the keeper II until the end e2 ol the former is inserted in the recess H3 of the latter. Then in this position, the expansion of the spring S acts on the lever R and adjusts the end of one arm ol. the latter against and upon the shoulder E2, as shown in Fig. 8. This prevents the keeper II from being rotated,and the tongue H2 of the latter engaging with the groove F2of the spindle F the latter is also prevented from turning, and the end of the lever R engaging with the shoulder E2, as shown in Fig. 8, the accidental disengagement of the locking-bolt P from the keeper II is avoided and completely prevented. This prevents the spring-bolt J from being retracted and thus securely locks the door, and also completely prevents the useless rotation of the spindle.

XVhen the parts of the lock are adj usted as described and it is wished to unlock the door, the key is turned in the direction of the dotted line @c shown in Fig. 8. By turning the key in this direction the bit thereof engages with the lever R and disengages the end of the latter from above the shoulder E2. The further turning of the key brings the bit against the shoulder P3 of the locking-bolt P. The continuation of the turning of the key adjusts the locking-bolt and lever to the position shown in Fig. 6 and disengages the end e2 of the locking-bolt P from the recess I-I3 oi' This moves the l IOO IIO

the keeper H, and the lever R being pivoted on the stud P4 of the locking-bolt P both the lockingbolt and lever are adjusted simultaneously to the position shown in Fig. 6. When in this position, the door is unlocked and the spindle permitted to turn perfectly free.

In the annexed drawings a shoulder E2 is Vshown on the case E, which engages with the IO recess R3 of the lever R; but this may be vice versa, and instead of the opening R/ in the lever R the former may be dispensed vwith and said lever provided with flanges or projections, the engagement of the bit of the key With the latter operating said lever and locking-bolt, so that While I prefer the construction shown I do not limit myself to the details thereof, as they may be modified in various ways without departing from the spirit of my invention. I

Having thus described my invention, I claim- In a lock of the character described,the combination with the bolt, a grooved spindle for retracting the same, and a keeper mounted onsuch spindle and having an interior tongue taking into said groove and an exterior recess; of a case secured to the face of the door and having a keyhole, a shoulder within the case projecting toward the side of such keyhole, a locking-bolt sliding in the case and having an end for engaging the recess of said keeper, key-shoulders, and a dang-eg and provided with a stud; a lever having an opening in its upper end journaled on said stud and a forked lower end with a key-receiving recess between the arms of the fork and a notch in the outer edge of one arm engaging said shoulder on the case when the lockingbolt is retracted; and a spring attached at one end to the lever, bearing against said iiange on the locking-bolt, and pressing the notched end of the lever normally toward said shoulder, as and for the purpose set forth.

In testimony whereof I have signed in the presence of the two undersigned witnesses.

` ADNA VILDERN.

Vitnes'ses:

P. J. EDMUNDs, S. MCBAIN. 

